Hoogle Search

Within LTS Haskell 24.25 (ghc-9.10.3)

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Exact lookup

1. pixelMapXY :: (Pixel a, Pixel b) => (Int -> Int -> a -> b) -> Image a -> Image b

   JuicyPixels	Codec.Picture.Types

   Just like pixelMap only the function takes the pixel coordinates as additional parameters.

2. pixelOpacity :: Pixel a => a -> PixelBaseComponent a

   JuicyPixels	Codec.Picture.Types

   Return the opacity of a pixel, if the pixel has an alpha layer, return the alpha value. If the pixel doesn't have an alpha value, return a value representing the opaqueness.

3. promotePixel :: ColorConvertible a b => a -> b

   JuicyPixels	Codec.Picture.Types

   Convert a pixel type to another pixel type. This operation should never lose any data.

4. readPackedPixelAt :: forall m px . (Pixel px, PackeablePixel px, Storable (PackedRepresentation px), PrimMonad m) => MutableImage (PrimState m) px -> Int -> m px

   JuicyPixels	Codec.Picture.Types

   Read a packeable pixel from an image. Equivalent to unsafeReadPixel

5. readPixel :: (Pixel a, PrimMonad m) => MutableImage (PrimState m) a -> Int -> Int -> m a

   JuicyPixels	Codec.Picture.Types

   Same as pixelAt but for mutable images.

6. unpackPixel :: PackeablePixel a => PackedRepresentation a -> a

   JuicyPixels	Codec.Picture.Types

   Inverse transformation, to speed up reading

7. unsafePixelAt :: Pixel a => Vector (PixelBaseComponent a) -> Int -> a

   JuicyPixels	Codec.Picture.Types

   Unsafe version of pixelAt, read a pixel at the given index without bound checking (if possible). The index is expressed in number (PixelBaseComponent a)

8. unsafeReadPixel :: (Pixel a, PrimMonad m) => STVector (PrimState m) (PixelBaseComponent a) -> Int -> m a

   JuicyPixels	Codec.Picture.Types

   Unsafe version of readPixel, read a pixel at the given position without bound checking (if possible). The index is expressed in number (PixelBaseComponent a)

9. unsafeWritePixel :: (Pixel a, PrimMonad m) => STVector (PrimState m) (PixelBaseComponent a) -> Int -> a -> m ()

   JuicyPixels	Codec.Picture.Types

   Unsafe version of writePixel, write a pixel at the given position without bound checking. This can be _really_ unsafe. The index is expressed in number (PixelBaseComponent a)

10. unsafeWritePixelBetweenAt :: (PrimMonad m, Pixel px, PackeablePixel px, Storable (PackedRepresentation px)) => MutableImage (PrimState m) px -> px -> Int -> Int -> m ()

    JuicyPixels	Codec.Picture.Types

    Fill a packeable pixel between two bounds.

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